Alzheimer's hampers developments in radical life extension

Life expectancy for the longest-lived populations has been growing more or less linearly since the 1840s.

Genetics restricts lifespan for large population subset

Up to 50% of all variation in lifespan may be due to genetic factors, indicating a significant but not exclusive role of genetics in determining longevity.

Limited rapamycin use limits lifespan extension potential

The FOXO3 gene is closely associated with longevity, and particular variants of this gene are found more frequently in individuals aged 90 and above, suggesting a genetic basis for extended lifespan.